Power assist: vacuumRecall 22V-315 · Mercedes-Benz vehicles
Mercedes-Benz USA, LLC recall 22V-315 covers 350,294 Mercedes-Benz vehicles for a power assist: vacuum problem, reported to NHTSA on May 9, 2022. The manufacturer's latest report (2025 Q4) shows 43% of affected vehicles repaired.
Do not drive these vehicles until repaired
Source: NHTSA recall 22V315000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML-Class, GL-Class, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.
The risk
Reduced brake performance or brake failure can increase the risk of a crash.
The fix
Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed June 30, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2022050014, 2022050015 2022090006, & 2022090007.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
43%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.